简介:Chinafacesseverechallengesintheyearsaheadtoitsfamilyplanningprogramasthecountryundergoeshistorictransformations,however,thegovernmentisreadytomeetthosechallengeswithnewstrategies.TheseremarksweremadebyZhangWeiqing,ministeroftheStateFamilyPlanningComm...
简介:据报道,越南武文杰总理与越南水泥总公司的领导和各成员单位,就到2000年水泥部门的发展以及到2010年水泥生产的战略目标的提案进行商讨。目前,越南水泥总公司有14个公司设在10个省市,在全国各地有各公司单位设啊立的分支公司。越流水泥总公司同30个外国经济组织建立了贸易关系。1993年,越南水泥总公司啊上缴财政8069:16记后,预计今年可上缴16660亿盾。现有设计能力为400万吨(1993年,水泥啊总公司已生产432万吨水泥)。为满足至2000年消费水泥的要求,水泥总公司力争达2070啊万吨水泥,其中现有功率450吨,自行投资能力440万吨,各联营工厂能力880万吨,竖炉水泥能力300万吨。
简介:Basedon6-hourlysensibleheatfluxandlatentheatfluxfromtheNCEPClimateForecastSystemReanalysis(CFSR)andcirculationdatafromtheJapanese25-yearReanalysis(JRA-25),theinitialdevelopingprocessoftropicalcycloneMindulle(1005)in2010hasbeendiagnosedtorevealtheimpactofair-seainteractionovertheSouthChinaSea(SCS)onthegenesisofitsincipientvortex.TheresultsshowthattheincipientvortexfirstoccurredeastoftheLuzonIslandon0000UTC20August,suggestingthatthetopographicforcingoftheLuzonIslandforeasterlywindsoverthewesternPacificmightbeoneofthefactorsresponsiblefortheformationoftheincipientvortex.Duringtheformationstageoftheincipientvortex,strongsoutheasterliesovertheSCScausedwarmwaterofthemiddleandeasternSCStoflowtowardtheLuzonIslandduetoEkmantransportresultingfromwindstress,leadingtoanincreaseoftheseasurfacetemperatureandsensibleheatfluxintotheatmosphere.Althoughtheanomaloussensibleheatingfavoredsurfacepressuretoreduce,itwasnotconducivetotheincreaseoflocalvorticityassociatedwiththevortexabovetheheatingareabecause,accordingtotheatmosphericthermaladaptationtheory,theanticyclonicvorticitywouldbecreatedinthelowertroposphereduetothedecreasedverticalgradientofthesensibleheating.However,theascendingmotionsoccurredovertheeasternareaoftheanomaloussensibleheatingduetotheaugmentationofthevorticityadvectionwithincreasingheight,causingwatervaportocondenseinthemiddleanduppertroposphere.Inturn,cyclonicvorticitywasgeneratedinthelowertroposphereduetotheincreasedverticalgradientofthecondensationlatentheating,resultingintheformationandfurthergrowthoftheincipientvortex.Therefore,thevorticitycreationduetothecondensationheatingplayedadominantroleduringthesubsequentenhancingstageoftheincipientvortex.
简介:DuringthedevelopingphaseofcentralPacificElNio(CPEN),morefrequentTCgenesisoverthenorthwestquadrantofthewesternNorthPacific(WNP)isattributedtothehorizontalshiftofenvironmentalvorticityfield.SuchanorthwestwardshiftresemblestheLaNiacomposite,eventhoughfactorsthatcausetheshiftdiffer(intheLaNiacasetherelativehumidityeffectiscrucial).GreaterreductionofTCfrequencyoverWNPhappenedduringthedecayingphaseofeasternPacificElNio(EPEN)thanCPEN,duetothedifferenceoftheanomalousPhilippineSeaanticyclonestrength.TheTCgenesisexhibitsanupward(downward)trendoverthenorthern(southern)partoftheWNP,whichislinkedtoSSTandassociatedcirculationchangesthroughlocalandremoteeffects.